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Any five milestones

Practice: Mixed

Put these 5 milestones in time order, earliest at the top. The years appear when you lock in your order.

Earliest

  1. 1
    Vaccine chickenpox

    The chickenpox (varicella) vaccine is licensed in the U.S.

  2. 2
    Vaccine pertussis

    The first whole-cell whooping cough (pertussis) vaccines are licensed in the U.S.

  3. 3
    Elimination measles

    Measles is declared eliminated from the United States

  4. 4
    Eradication rinderpest (a cattle disease)

    The last identified case of rinderpest, the second disease ever eradicated

  5. 5
    Treatment diabetes

    A Nobel Prize for the discovery of insulin

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